GCM http 401 authorization error

user_2401879 0
Viewed 78120

When my backend server sends post requests to GCM servers I get an authorization error HTTP 401.

I followed the steps described here:

http://developer.android.com/google/gcm/http.html#auth_error

>> api_key=AIzaSyDEy3...

>> curl --header "Authorization: key=$api_key" --header Content-Type:"application/json" https://android.googleapis.com/gcm/send  -d "{\"registration_id\":\"ABC\"}"

I get this:

<HTML>
<HEAD>
<TITLE>Unauthorized</TITLE>
</HEAD>
<BODY BGCOLOR="#FFFFFF" TEXT="#000000">
<H1>Unauthorized</H1>
<H2>Error 401</H2>
</BODY>
</HTML>

In the troubleshooting it says:

Authentication Error
The sender account that you're trying to use to send a message couldn't be authenticated. Possible causes are:
    1. Authorization header missing or with invalid syntax.
    2. Invalid project number sent as key.
    3. Key valid but with GCM service disabled.
    4. Request originated from a server not whitelisted in the Server Key IPs.

I have questions about that:

  1. Is the header in the curl request correct?
  2. Do they mean "api_key" (AIzaSy…) or the Project number like 8305134….?
  3. How do I whitelist my Server Key IP?
  4. If I'm running the curl command, do I have to whitelist the IP-Address of my computer?
google-cloud-messaging http-status-code-401 push-notification android
13 Answers

If you have recently tried to create a new project in GCM and add a server key, it won't succeed authorization anyway because Google stopped authorizing newly created server keys in order to promote Firebase Cloud Messaging. Currently the only option to create a new key is to first migrate the existing project to Firebase here.

user_63552860

For using Firestore you should use Web API keyfirebase console gives you, which you can find at https://console.firebase.google.com/project/<yourProjectName>/settings/general/<yourAppPckageName>.

but, for using Firebase to push notification your mobile device clients you should use Server key developer console gives you, which you can find at https://console.developers.google.com/apis/credentials?project=<yourProjectName>

user_27130630
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